Finding the Fourth Proportional to 208,108,345.68, 287,207,153.04 and 115,317,959.76
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Solution
The fourth proportional to 208,108,345.68, 287,207,153.04 and 115,317,959.76 is: 159,148,557.01
Step by Step Solution
- Step 1: Write the proportion equation
208,108,345.68 : 287,207,153.04 = 115,317,959.76 : x - Step 2: Convert to fraction form
208,108,345.68/287,207,153.04 = 115,317,959.76/x - Step 3: Cross multiply
208,108,345.68x = 287,207,153.04 × 115,317,959.76 - Step 4: Simplify right side
208,108,345.68x = 33,120,142,917,050,884 - Step 5: Solve for x
x = 33,120,142,917,050,884/208,108,345.68 - Step 6: Final answer
x = 159,148,557.01
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.